1 hour ago, @diegofrancesco said:after upgrading from Prestashop 1.7.2 to 1.7.8, when I try to import a csv file to update the products the import is successful without errors but new products with name n.d. are created. and inside the contents actually present in the csv file. Instead of updating existing products.
Did you check your modules before update. Not all can go to 1.7.8.
And why did you update?
Your hoster went higher in PHP Versions?